Home / 76,912,081.20-115,368,121.80-74,224,695.60

Finding the Fourth Proportional to 76,912,081.20, 115,368,121.80 and 74,224,695.60

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Solution

The fourth proportional to 76,912,081.20, 115,368,121.80 and 74,224,695.60 is: 111,337,043.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,912,081.20 : 115,368,121.80 = 74,224,695.60 : x
  2. Step 2: Convert to fraction form
    76,912,081.20/115,368,121.80 = 74,224,695.60/x
  3. Step 3: Cross multiply
    76,912,081.20x = 115,368,121.80 × 74,224,695.60
  4. Step 4: Simplify right side
    76,912,081.20x = 8,563,163,722,548,723
  5. Step 5: Solve for x
    x = 8,563,163,722,548,723/76,912,081.20
  6. Step 6: Final answer
    x = 111,337,043.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.